Buffer



Cil

Patented Jan. 31, 1933 PATNT GFF SVEN BCKSTRM, GF HELSINGFORS, FINLANDBUFFER Application led ctooer 5, 1931.

This invention appertains to new and useful improvements in cleaningimplements and more particularly to a novel polishing device,particularly adapted for polishing automobile bodies and particularlypainted surfaces.

The principal obiect of this invention is to provide a buffer orpolisher which because of its shape, is capable of reaching remotepoints and crevices.

Other important objects and advantages of the invention will becomeapparent to the reader of the following specification.

ln the drawing The figure represents a longitudinal sectional viewthrough the implement.

Referring' to the drawing it can be seen that numeral represents afrusto-conical shaped casing, open at one end, and at this end providedwith a removable header 6 of cup-shape and having projecting outwardlyfrom the central portion thereof, a hollow shank 7, within which aswitch 8 can be lo cated, with a lever 9 for operating the sameprojecting therefrom, through an opening 10 in the shank, and through anopening 11 in the tubular covering 12 for the shank. A cover 13 ofsuitable insulating material is secured to the outer end of the shank,and has an opening therethrough through which the conductive wire let tothe switch 8 can be trained.

Nithin the shell 5 is a motor including the field coil or coils 15 andthe armature 1G operating therein and driving the armature shaft 17,which at one end is journaled into the header 6 as at 1S and at itsopposite end, as at 19, in the thickened portion 2O of theconical-shaped casing 21.

At the reduced end of the shell 5 and eX teriorly thereof, is the gear:22 suitably secured to the armature shaft 17 and meshing with theintermediate gears 23 on the counter shafts 24. Smaller gears 25 arealso keyed to Serial No. 567,034.

brushes engaging the commutator, while numeral 29 represents theconductor wires eX- tending from the switch 8 to the field of the motor,with the wires 30 indicating the connections between the field and thebrushes 28.

cup-shaped shell 3l is externally tliread 55 y ed at its enlarged endfor engagement into the enlarged end of the casing 21, whereby thecasing and shell 31 are fined together. lnterposed between the reducedend (of the shell 31 and the shank 7 ant-frictional mount 32', so thatthe shell 31 rotates around the shank 7.

A. resilient pad of rubber or the like is denoted by numeral 33 and issuitably secured over the entire outer surface 21 including thethickened end portion 20. A jacket of cloth or other suitable material34 can be arranged over this pad in a removable manner, so that when thesame becomes soiled, the same can be removed and 70 replaced by anothercloth.

lt can now be seen, that by operating the switch 8 to close the motorcircuit, the motor can operate to drive the armature shaft 17 andthrough the gears 22, 23 erate the shell 21 which carries a pad 33 andcovering 34.

While the foregoing specilication sets forth the invention in specificterms, it is to be understood that the shape, size and materials may beresorted to without departing from the spirit and scope of the inventionas claimed hereinafter.

Having thus described my invention, what 85 wardly of the large end 0fthe casing, a mo- 90 is a ball bearing cf the casing and 25, op-

tor in and concentric With the shell, said shell being provided Wit-h ahandle journaled through the large end of the casing, drive meansbetween the motor and the casing, said drive means comprising a shaftdriven by the motor, a ring gear on the inner side of the casing, andgears between the shaft and the ring gea-r.

2. A bnier as described in claim l and having the apex portion of thecase thickened and recessed to provide a socket, and aV bearing mountedWithin the socket for jonrnally receiving the shaft In testimony whereofI zl'iz; niy signature.

SVEN BCKSTRM.

Lsease

